Put a T down by the turbo oil feed in the "port" for the stock pressure sender. I don't remember exactly the combination of brass fittings (I think there was an elbow involved), but it's not that hard. Do yourself a favor and use copper tubing, too. Theres lots of hot stuff and moving parts around there. You can get the copper tubing kit from Autometer through Jegs or Summit (check autometer.com for a P/N).
Jim